25262811616 has 96 divisors (see below), whose sum is σ = 61054560000. Its totient is φ = 10256996736.

The previous prime is 25262811611. The next prime is 25262811643. The reversal of 25262811616 is 61611826252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25262811611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147975 + ... + 269113.

It is an arithmetic number, because the mean of its divisors is an integer number (635985000).

Almost surely, 2^25262811616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25262811616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30527280000).

25262811616 is an abundant number, since it is smaller than the sum of its proper divisors (35791748384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25262811616 is a wasteful number, since it uses less digits than its factorization.

25262811616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121189 (or 121167 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The spelling of 25262811616 in words is "twenty-five billion, two hundred sixty-two million, eight hundred eleven thousand, six hundred sixteen".